Which statement describes a reason people must protect mineral resources? A.
Minerals are used in only a few products.

B.
Mining has no effect on the natural surroundings.

C.
Minerals are pretty to look at but rarely useful.

D.
There is a limited amount of each mineral available.

Are hallucinogen a clinically useful drugs?

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon